diff options
Diffstat (limited to 'arch')
55 files changed, 245 insertions, 312 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index a79a1ad..366ec06 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -322,4 +322,23 @@ config HAVE_IRQ_TIME_ACCOUNTING config HAVE_ARCH_TRANSPARENT_HUGEPAGE bool +config HAVE_MOD_ARCH_SPECIFIC + bool + help + The arch uses struct mod_arch_specific to store data. Many arches + just need a simple module loader without arch specific data - those + should not enable this. + +config MODULES_USE_ELF_RELA + bool + help + Modules only use ELF RELA relocations. Modules with ELF REL + relocations will give an error. + +config MODULES_USE_ELF_REL + bool + help + Modules only use ELF REL relocations. Modules with ELF RELA + relocations will give an error. + source "kernel/gcov/Kconfig" diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index 7a08cfb..5dd7f5d 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -22,6 +22,8 @@ config ALPHA select GENERIC_STRNLEN_USER select GENERIC_KERNEL_THREAD select GENERIC_KERNEL_EXECVE + select HAVE_MOD_ARCH_SPECIFIC + select MODULES_USE_ELF_RELA help The Alpha is a 64-bit general-purpose processor designed and marketed by the Digital Equipment Corporation of blessed memory, diff --git a/arch/alpha/include/asm/module.h b/arch/alpha/include/asm/module.h index 7b63743..9cd13b5 100644 --- a/arch/alpha/include/asm/module.h +++ b/arch/alpha/include/asm/module.h @@ -1,19 +1,13 @@ #ifndef _ALPHA_MODULE_H #define _ALPHA_MODULE_H +#include <asm-generic/module.h> + struct mod_arch_specific { unsigned int gotsecindex; }; -#define Elf_Sym Elf64_Sym -#define Elf_Shdr Elf64_Shdr -#define Elf_Ehdr Elf64_Ehdr -#define Elf_Phdr Elf64_Phdr -#define Elf_Dyn Elf64_Dyn -#define Elf_Rel Elf64_Rel -#define Elf_Rela Elf64_Rela - #define ARCH_SHF_SMALL SHF_ALPHA_GPREL #ifdef MODULE diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 261fdd0..73067ef 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -53,6 +53,8 @@ config ARM select PERF_USE_VMALLOC select RTC_LIB select SYS_SUPPORTS_APM_EMULATION + select HAVE_MOD_ARCH_SPECIFIC if ARM_UNWIND + select MODULES_USE_ELF_REL help The ARM series is a line of low-power-consumption RISC chip designs licensed by ARM Ltd and targeted at embedded applications and diff --git a/arch/arm/include/asm/module.h b/arch/arm/include/asm/module.h index 6c6809f..0d3a28d 100644 --- a/arch/arm/include/asm/module.h +++ b/arch/arm/include/asm/module.h @@ -1,9 +1,7 @@ #ifndef _ASM_ARM_MODULE_H #define _ASM_ARM_MODULE_H -#define Elf_Shdr Elf32_Shdr -#define Elf_Sym Elf32_Sym -#define Elf_Ehdr Elf32_Ehdr +#include <asm-generic/module.h> struct unwind_table; @@ -16,13 +14,11 @@ enum { ARM_SEC_DEVEXIT, ARM_SEC_MAX, }; -#endif struct mod_arch_specific { -#ifdef CONFIG_ARM_UNWIND struct unwind_table *unwind[ARM_SEC_MAX]; -#endif }; +#endif /* * Add the ARM architecture version to the version magic string diff --git a/arch/avr32/Kconfig b/arch/avr32/Kconfig index 5ade51c..06e73bf 100644 --- a/arch/avr32/Kconfig +++ b/arch/avr32/Kconfig @@ -15,6 +15,8 @@ config AVR32 select ARCH_WANT_IPC_PARSE_VERSION select ARCH_HAVE_NMI_SAFE_CMPXCHG select GENERIC_CLOCKEVENTS + select HAVE_MOD_ARCH_SPECIFIC + select MODULES_USE_ELF_RELA help AVR32 is a high-performance 32-bit RISC microprocessor core, designed for cost-sensitive embedded applications, with particular diff --git a/arch/avr32/include/asm/module.h b/arch/avr32/include/asm/module.h index 4514445..3f083d3 100644 --- a/arch/avr32/include/asm/module.h +++ b/arch/avr32/include/asm/module.h @@ -1,6 +1,8 @@ #ifndef __ASM_AVR32_MODULE_H #define __ASM_AVR32_MODULE_H +#include <asm-generic/module.h> + struct mod_arch_syminfo { unsigned long got_offset; int got_initialized; @@ -17,10 +19,6 @@ struct mod_arch_specific { struct mod_arch_syminfo *syminfo; }; -#define Elf_Shdr Elf32_Shdr -#define Elf_Sym Elf32_Sym -#define Elf_Ehdr Elf32_Ehdr - #define MODULE_PROC_FAMILY "AVR32v1" #define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig index ccd9193..b6f3ad5 100644 --- a/arch/blackfin/Kconfig +++ b/arch/blackfin/Kconfig @@ -43,6 +43,8 @@ config BLACKFIN select HAVE_NMI_WATCHDOG if NMI_WATCHDOG select GENERIC_SMP_IDLE_THREAD select ARCH_USES_GETTIMEOFFSET if !GENERIC_CLOCKEVENTS + select HAVE_MOD_ARCH_SPECIFIC + select MODULES_USE_ELF_RELA config GENERIC_CSUM def_bool y diff --git a/arch/blackfin/include/asm/module.h b/arch/blackfin/include/asm/module.h index ed5689b..231a149 100644 --- a/arch/blackfin/include/asm/module.h +++ b/arch/blackfin/include/asm/module.h @@ -7,9 +7,7 @@ #ifndef _ASM_BFIN_MODULE_H #define _ASM_BFIN_MODULE_H -#define Elf_Shdr Elf32_Shdr -#define Elf_Sym Elf32_Sym -#define Elf_Ehdr Elf32_Ehdr +#include <asm-generic/module.h> struct mod_arch_specific { Elf_Shdr *text_l1; diff --git a/arch/c6x/Kconfig b/arch/c6x/Kconfig index 45268b5..aee1b56 100644 --- a/arch/c6x/Kconfig +++ b/arch/c6x/Kconfig @@ -18,6 +18,7 @@ config C6X select OF_EARLY_FLATTREE select GENERIC_CLOCKEVENTS select GENERIC_KERNEL_THREAD + select MODULES_USE_ELF_RELA config MMU def_bool n diff --git a/arch/c6x/include/asm/module.h b/arch/c6x/include/asm/module.h index a453f97..5c7269c 100644 --- a/arch/c6x/include/asm/module.h +++ b/arch/c6x/include/asm/module.h @@ -13,17 +13,7 @@ #ifndef _ASM_C6X_MODULE_H #define _ASM_C6X_MODULE_H -#define Elf_Shdr Elf32_Shdr -#define Elf_Sym Elf32_Sym -#define Elf_Ehdr Elf32_Ehdr -#define Elf_Addr Elf32_Addr -#define Elf_Word Elf32_Word - -/* - * This file contains the C6x architecture specific module code. - */ -struct mod_arch_specific { -}; +#include <asm-generic/module.h> struct loaded_sections { unsigned int new_vaddr; diff --git a/arch/cris/Kconfig b/arch/cris/Kconfig index a118163..a672444 100644 --- a/arch/cris/Kconfig +++ b/arch/cris/Kconfig @@ -48,6 +48,7 @@ config CRIS select GENERIC_IOMAP select GENERIC_SMP_IDLE_THREAD if ETRAX_ARCH_V32 select GENERIC_CMOS_UPDATE + select MODULES_USE_ELF_RELA config HZ int diff --git a/arch/cris/include/asm/Kbuild b/arch/cris/include/asm/Kbuild index ff1bf7f..6d43a95 100644 --- a/arch/cris/include/asm/Kbuild +++ b/arch/cris/include/asm/Kbuild @@ -10,3 +10,4 @@ header-y += sync_serial.h generic-y += clkdev.h generic-y += exec.h +generic-y += module.h diff --git a/arch/cris/include/asm/module.h b/arch/cris/include/asm/module.h deleted file mode 100644 index 7ee7231..0000000 --- a/arch/cris/include/asm/module.h +++ /dev/null @@ -1,9 +0,0 @@ -#ifndef _ASM_CRIS_MODULE_H -#define _ASM_CRIS_MODULE_H -/* cris is simple */ -struct mod_arch_specific { }; - -#define Elf_Shdr Elf32_Shdr -#define Elf_Sym Elf32_Sym -#define Elf_Ehdr Elf32_Ehdr -#endif /* _ASM_CRIS_MODULE_H */ diff --git a/arch/frv/include/asm/module.h b/arch/frv/include/asm/module.h index 3d5c636..a8848f0 100644 --- a/arch/frv/include/asm/module.h +++ b/arch/frv/include/asm/module.h @@ -11,13 +11,7 @@ #ifndef _ASM_MODULE_H #define _ASM_MODULE_H -struct mod_arch_specific -{ -}; - -#define Elf_Shdr Elf32_Shdr -#define Elf_Sym Elf32_Sym -#define Elf_Ehdr Elf32_Ehdr +#include <asm-generic/module.h> /* * Include the architecture version. diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig index 90462eb..98fabd1 100644 --- a/arch/h8300/Kconfig +++ b/arch/h8300/Kconfig @@ -7,6 +7,7 @@ config H8300 select ARCH_WANT_IPC_PARSE_VERSION select GENERIC_IRQ_SHOW select GENERIC_CPU_DEVICES + select MODULES_USE_ELF_RELA config SYMBOL_PREFIX string diff --git a/arch/h8300/include/asm/Kbuild b/arch/h8300/include/asm/Kbuild index fccd81e..50bbf38 100644 --- a/arch/h8300/include/asm/Kbuild +++ b/arch/h8300/include/asm/Kbuild @@ -2,3 +2,4 @@ include include/asm-generic/Kbuild.asm generic-y += clkdev.h generic-y += exec.h +generic-y += module.h diff --git a/arch/h8300/include/asm/module.h b/arch/h8300/include/asm/module.h deleted file mode 100644 index 8e46724..0000000 --- a/arch/h8300/include/asm/module.h +++ /dev/null @@ -1,11 +0,0 @@ -#ifndef _ASM_H8300_MODULE_H -#define _ASM_H8300_MODULE_H -/* - * This file contains the H8/300 architecture specific module code. - */ -struct mod_arch_specific { }; -#define Elf_Shdr Elf32_Shdr -#define Elf_Sym Elf32_Sym -#define Elf_Ehdr Elf32_Ehdr - -#endif /* _ASM_H8/300_MODULE_H */ diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig index b2fdfb70..0744f7d 100644 --- a/arch/hexagon/Kconfig +++ b/arch/hexagon/Kconfig @@ -30,6 +30,7 @@ config HEXAGON select KTIME_SCALAR select GENERIC_CLOCKEVENTS select GENERIC_CLOCKEVENTS_BROADCAST + select MODULES_USE_ELF_RELA ---help--- Qualcomm Hexagon is a processor architecture designed for high performance and low power across a wide variety of applications. diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 4c10e60..3279646 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -40,6 +40,8 @@ config IA64 select ARCH_THREAD_INFO_ALLOCATOR select ARCH_CLOCKSOURCE_DATA select GENERIC_TIME_VSYSCALL_OLD + select HAVE_MOD_ARCH_SPECIFIC + select MODULES_USE_ELF_RELA default y help The Itanium Processor Family is Intel's 64-bit successor to diff --git a/arch/ia64/include/asm/module.h b/arch/ia64/include/asm/module.h index 908eaef..dfba22a 100644 --- a/arch/ia64/include/asm/module.h +++ b/arch/ia64/include/asm/module.h @@ -1,6 +1,8 @@ #ifndef _ASM_IA64_MODULE_H #define _ASM_IA64_MODULE_H +#include <asm-generic/module.h> + /* * IA-64-specific support for kernel module loader. * @@ -29,10 +31,6 @@ struct mod_arch_specific { unsigned int next_got_entry; /* index of next available got entry */ }; -#define Elf_Shdr Elf64_Shdr -#define Elf_Sym Elf64_Sym -#define Elf_Ehdr Elf64_Ehdr - #define MODULE_PROC_FAMILY "ia64" #define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY \ "gcc-" __stringify(__GNUC__) "." __stringify(__GNUC_MINOR__) diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig index e875fc3..f807721 100644 --- a/arch/m32r/Kconfig +++ b/arch/m32r/Kconfig @@ -14,6 +14,7 @@ config M32R select GENERIC_IRQ_SHOW select GENERIC_ATOMIC64 select ARCH_USES_GETTIMEOFFSET + select MODULES_USE_ELF_RELA config SBUS bool diff --git a/arch/m32r/include/asm/Kbuild b/arch/m32r/include/asm/Kbuild index fccd81e..50bbf38 100644 --- a/arch/m32r/include/asm/Kbuild +++ b/arch/m32r/include/asm/Kbuild @@ -2,3 +2,4 @@ include include/asm-generic/Kbuild.asm generic-y += clkdev.h generic-y += exec.h +generic-y += module.h diff --git a/arch/m32r/include/asm/module.h b/arch/m32r/include/asm/module.h deleted file mode 100644 index eb73ee0..0000000 --- a/arch/m32r/include/asm/module.h +++ /dev/null @@ -1,10 +0,0 @@ -#ifndef _ASM_M32R_MODULE_H -#define _ASM_M32R_MODULE_H - -struct mod_arch_specific { }; - -#define Elf_Shdr Elf32_Shdr -#define Elf_Sym Elf32_Sym -#define Elf_Ehdr Elf32_Ehdr - -#endif /* _ASM_M32R_MODULE_H */ diff --git a/arch/m32r/kernel/module.c b/arch/m32r/kernel/module.c index 3071fe8..38233b6 100644 --- a/arch/m32r/kernel/module.c +++ b/arch/m32r/kernel/module.c @@ -201,18 +201,3 @@ int apply_relocate_add(Elf32_Shdr *sechdrs, } return 0; } - -int apply_relocate(Elf32_Shdr *sechdrs, - const char *strtab, - unsigned int symindex, - unsigned int relsec, - struct module *me) -{ -#if 0 - printk(KERN_ERR "module %s: REL RELOCATION unsupported\n", - me->name); - return -ENOEXEC; -#endif - return 0; - -} diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index 76fd6e2..e7c1614 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -16,6 +16,9 @@ config M68K select ARCH_WANT_IPC_PARSE_VERSION select ARCH_USES_GETTIMEOFFSET if MMU && !COLDFIRE select GENERIC_KERNEL_THREAD + select HAVE_MOD_ARCH_SPECIFIC + select MODULES_USE_ELF_REL + select MODULES_USE_ELF_RELA config RWSEM_GENERIC_SPINLOCK bool diff --git a/arch/m68k/include/asm/module.h b/arch/m68k/include/asm/module.h index edffe66..8b58fce 100644 --- a/arch/m68k/include/asm/module.h +++ b/arch/m68k/include/asm/module.h @@ -1,6 +1,8 @@ #ifndef _ASM_M68K_MODULE_H #define _ASM_M68K_MODULE_H +#include <asm-generic/module.h> + enum m68k_fixup_type { m68k_fixup_memoffset, m68k_fixup_vnode_shift, @@ -36,8 +38,4 @@ struct module; extern void module_fixup(struct module *mod, struct m68k_fixup_info *start, struct m68k_fixup_info *end); -#define Elf_Shdr Elf32_Shdr -#define Elf_Sym Elf32_Sym -#define Elf_Ehdr Elf32_Ehdr - #endif /* _ASM_M68K_MODULE_H */ diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index 53fd94a..4cba743 100644 --- a/arch/microblaze/Kconfig +++ b/arch/microblaze/Kconfig @@ -25,6 +25,7 @@ config MICROBLAZE select GENERIC_CPU_DEVICES select GENERIC_ATOMIC64 select GENERIC_CLOCKEVENTS + select MODULES_USE_ELF_RELA config SWAP def_bool n diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 35453ea..aae16cd 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -37,6 +37,9 @@ config MIPS select BUILDTIME_EXTABLE_SORT select GENERIC_CLOCKEVENTS select GENERIC_CMOS_UPDATE + select HAVE_MOD_ARCH_SPECIFIC + select MODULES_USE_ELF_REL + select MODULES_USE_ELF_RELA if 64BIT menu "Machine selection" diff --git a/arch/mips/include/asm/module.h b/arch/mips/include/asm/module.h index dca8bce..26137da 100644 --- a/arch/mips/include/asm/module.h +++ b/arch/mips/include/asm/module.h @@ -35,11 +35,14 @@ typedef struct { } Elf64_Mips_Rela; #ifdef CONFIG_32BIT - #define Elf_Shdr Elf32_Shdr #define Elf_Sym Elf32_Sym #define Elf_Ehdr Elf32_Ehdr #define Elf_Addr Elf32_Addr +#define Elf_Rel Elf32_Rel +#define Elf_Rela Elf32_Rela +#define ELF_R_TYPE(X) ELF32_R_TYPE(X) +#define ELF_R_SYM(X) ELF32_R_SYM(X) #define Elf_Mips_Rel Elf32_Rel #define Elf_Mips_Rela Elf32_Rela @@ -50,11 +53,14 @@ typedef struct { #endif #ifdef CONFIG_64BIT - #define Elf_Shdr Elf64_Shdr #define Elf_Sym Elf64_Sym #define Elf_Ehdr Elf64_Ehdr #define Elf_Addr Elf64_Addr +#define Elf_Rel Elf64_Rel +#define Elf_Rela Elf64_Rela +#define ELF_R_TYPE(X) ELF64_R_TYPE(X) +#define ELF_R_SYM(X) ELF64_R_SYM(X) #define Elf_Mips_Rel Elf64_Mips_Rel #define Elf_Mips_Rela Elf64_Mips_Rela diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile index d6c2a74..414c269 100644 --- a/arch/mips/kernel/Makefile +++ b/arch/mips/kernel/Makefile @@ -31,6 +31,7 @@ obj-$(CONFIG_SYNC_R4K) += sync-r4k.o obj-$(CONFIG_STACKTRACE) += stacktrace.o obj-$(CONFIG_MODULES) += mips_ksyms.o module.o +obj-$(CONFIG_MODULES_USE_ELF_RELA) += module-rela.o obj-$(CONFIG_FUNCTION_TRACER) += mcount.o ftrace.o diff --git a/arch/mips/kernel/module-rela.c b/arch/mips/kernel/module-rela.c new file mode 100644 index 0000000..61d6002 --- /dev/null +++ b/arch/mips/kernel/module-rela.c @@ -0,0 +1,145 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Copyright (C) 2001 Rusty Russell. + * Copyright (C) 2003, 2004 Ralf Baechle (ralf@linux-mips.org) + * Copyright (C) 2005 Thiemo Seufer + */ + +#include <linux/elf.h> +#include <linux/err.h> +#include <linux/errno.h> +#include <linux/moduleloader.h> + +extern int apply_r_mips_none(struct module *me, u32 *location, Elf_Addr v); + +static int apply_r_mips_32_rela(struct module *me, u32 *location, Elf_Addr v) +{ + *location = v; + + return 0; +} + +static int apply_r_mips_26_rela(struct module *me, u32 *location, Elf_Addr v) +{ + if (v % 4) { + pr_err("module %s: dangerous R_MIPS_26 RELArelocation\n", + me->name); + return -ENOEXEC; + } + + if ((v & 0xf0000000) != (((unsigned long)location + 4) & 0xf0000000)) { + printk(KERN_ERR + "module %s: relocation overflow\n", + me->name); + return -ENOEXEC; + } + + *location = (*location & ~0x03ffffff) | ((v >> 2) & 0x03ffffff); + + return 0; +} + +static int apply_r_mips_hi16_rela(struct module *me, u32 *location, Elf_Addr v) +{ + *location = (*location & 0xffff0000) | + ((((long long) v + 0x8000LL) >> 16) & 0xffff); + + return 0; +} + +static int apply_r_mips_lo16_rela(struct module *me, u32 *location, Elf_Addr v) +{ + *location = (*location & 0xffff0000) | (v & 0xffff); + + return 0; +} + +static int apply_r_mips_64_rela(struct module *me, u32 *location, Elf_Addr v) +{ + *(Elf_Addr *)location = v; + + return 0; +} + +static int apply_r_mips_higher_rela(struct module *me, u32 *location, + Elf_Addr v) +{ + *location = (*location & 0xffff0000) | + ((((long long) v + 0x80008000LL) >> 32) & 0xffff); + + return 0; +} + +static int apply_r_mips_highest_rela(struct module *me, u32 *location, + Elf_Addr v) +{ + *location = (*location & 0xffff0000) | + ((((long long) v + 0x800080008000LL) >> 48) & 0xffff); + + return 0; +} + +static int (*reloc_handlers_rela[]) (struct module *me, u32 *location, + Elf_Addr v) = { + [R_MIPS_NONE] = apply_r_mips_none, + [R_MIPS_32] = apply_r_mips_32_rela, + [R_MIPS_26] = apply_r_mips_26_rela, + [R_MIPS_HI16] = apply_r_mips_hi16_rela, + [R_MIPS_LO16] = apply_r_mips_lo16_rela, + [R_MIPS_64] = apply_r_mips_64_rela, + [R_MIPS_HIGHER] = apply_r_mips_higher_rela, + [R_MIPS_HIGHEST] = apply_r_mips_highest_rela +}; + +int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab, + unsigned int symindex, unsigned int relsec, + struct module *me) +{ + Elf_Mips_Rela *rel = (void *) sechdrs[relsec].sh_addr; + Elf_Sym *sym; + u32 *location; + unsigned int i; + Elf_Addr v; + int res; + + pr_debug("Applying relocate section %u to %u\n", relsec, + sechdrs[relsec].sh_info); + + for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) { + /* This is where to make the change */ + location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr + + rel[i].r_offset; + /* This is the symbol it is referring to */ + sym = (Elf_Sym *)sechdrs[symindex].sh_addr + + ELF_MIPS_R_SYM(rel[i]); + if (IS_ERR_VALUE(sym->st_value)) { + /* Ignore unresolved weak symbol */ + if (ELF_ST_BIND(sym->st_info) == STB_WEAK) + continue; + printk(KERN_WARNING "%s: Unknown symbol %s\n", + me->name, strtab + sym->st_name); + return -ENOENT; + } + + v = sym->st_value + rel[i].r_addend; + + res = reloc_handlers_rela[ELF_MIPS_R_TYPE(rel[i])](me, location, v); + if (res) + return res; + } + + return 0; +} diff --git a/arch/mips/kernel/module.c b/arch/mips/kernel/module.c index 4f8c3cb..07ff581 100644 --- a/arch/mips/kernel/module.c +++ b/arch/mips/kernel/module.c @@ -51,7 +51,7 @@ void *module_alloc(unsigned long size) } #endif -static int apply_r_mips_none(struct module *me, u32 *location, Elf_Addr v) +int apply_r_mips_none(struct module *me, u32 *location, Elf_Addr v) { return 0; } @@ -63,13 +63,6 @@ static int apply_r_mips_32_rel(struct module *me, u32 *location, Elf_Addr v) return 0; } -static int apply_r_mips_32_rela(struct module *me, u32 *location, Elf_Addr v) -{ - *location = v; - - return 0; -} - static int apply_r_mips_26_rel(struct module *me, u32 *location, Elf_Addr v) { if (v % 4) { @@ -91,26 +84,6 @@ static int apply_r_mips_26_rel(struct module *me, u32 *location, Elf_Addr v) return 0; } -static int apply_r_mips_26_rela(struct module *me, u32 *location, Elf_Addr v) -{ - if (v % 4) { - pr_err("module %s: dangerous R_MIPS_26 RELArelocation\n", - me->name); - return -ENOEXEC; - } - - if ((v & 0xf0000000) != (((unsigned long)location + 4) & 0xf0000000)) { - printk(KERN_ERR - "module %s: relocation overflow\n", - me->name); - return -ENOEXEC; - } - - *location = (*location & ~0x03ffffff) | ((v >> 2) & 0x03ffffff); - - return 0; -} - static int apply_r_mips_hi16_rel(struct module *me, u32 *location, Elf_Addr v) { struct mips_hi16 *n; @@ -132,14 +105,6 @@ static int apply_r_mips_hi16_rel(struct module *me, u32 *location, Elf_Addr v) return 0; } -static int apply_r_mips_hi16_rela(struct module *me, u32 *location, Elf_Addr v) -{ - *location = (*location & 0xffff0000) | - ((((long long) v + 0x8000LL) >> 16) & 0xffff); - - return 0; -} - static void free_relocation_chain(struct mips_hi16 *l) { struct mips_hi16 *next; @@ -217,38 +182,6 @@ out_danger: return -ENOEXEC; } -static int apply_r_mips_lo16_rela(struct module *me, u32 *location, Elf_Addr v) -{ - *location = (*location & 0xffff0000) | (v & 0xffff); - - return 0; -} - -static int apply_r_mips_64_rela(struct module *me, u32 *location, Elf_Addr v) -{ - *(Elf_Addr *)location = v; - - return 0; -} - -static int apply_r_mips_higher_rela(struct module *me, u32 *location, - Elf_Addr v) -{ - *location = (*location & 0xffff0000) | - ((((long long) v + 0x80008000LL) >> 32) & 0xffff); - - return 0; -} - -static int apply_r_mips_highest_rela(struct module *me, u32 *location, - Elf_Addr v) -{ - *location = (*location & 0xffff0000) | - ((((long long) v + 0x800080008000LL) >> 48) & 0xffff); - - return 0; -} - static int (*reloc_handlers_rel[]) (struct module *me, u32 *location, Elf_Addr v) = { [R_MIPS_NONE] = apply_r_mips_none, @@ -258,18 +191,6 @@ static int (*reloc_handlers_rel[]) (struct module *me, u32 *location, [R_MIPS_LO16] = apply_r_mips_lo16_rel }; -static int (*reloc_handlers_rela[]) (struct module *me, u32 *location, - Elf_Addr v) = { - [R_MIPS_NONE] = apply_r_mips_none, - [R_MIPS_32] = apply_r_mips_32_rela, - [R_MIPS_26] = apply_r_mips_26_rela, - [R_MIPS_HI16] = apply_r_mips_hi16_rela, - [R_MIPS_LO16] = apply_r_mips_lo16_rela, - [R_MIPS_64] = apply_r_mips_64_rela, - [R_MIPS_HIGHER] = apply_r_mips_higher_rela, - [R_MIPS_HIGHEST] = apply_r_mips_highest_rela -}; - int apply_relocate(Elf_Shdr *sechdrs, const char *strtab, unsigned int symindex, unsigned int relsec, struct module *me) @@ -324,46 +245,6 @@ int apply_relocate(Elf_Shdr *sechdrs, const char *strtab, return 0; } -int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab, - unsigned int symindex, unsigned int relsec, - struct module *me) -{ - Elf_Mips_Rela *rel = (void *) sechdrs[relsec].sh_addr; - Elf_Sym *sym; - u32 *location; - unsigned int i; - Elf_Addr v; - int res; - - pr_debug("Applying relocate section %u to %u\n", relsec, - sechdrs[relsec].sh_info); - - for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) { - /* This is where to make the change */ - location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr - + rel[i].r_offset; - /* This is the symbol it is referring to */ - sym = (Elf_Sym *)sechdrs[symindex].sh_addr - + ELF_MIPS_R_SYM(rel[i]); - if (IS_ERR_VALUE(sym->st_value)) { - /* Ignore unresolved weak symbol */ - if (ELF_ST_BIND(sym->st_info) == STB_WEAK) - continue; - printk(KERN_WARNING "%s: Unknown symbol %s\n", - me->name, strtab + sym->st_name); - return -ENOENT; - } - - v = sym->st_value + rel[i].r_addend; - - res = reloc_handlers_rela[ELF_MIPS_R_TYPE(rel[i])](me, location, v); - if (res) - return res; - } - - return 0; -} - /* Given an address, look for it in the module exception tables. */ const struct exception_table_entry *search_module_dbetables(unsigned long addr) { diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig index ddbdc33..04669fa 100644 --- a/arch/mn10300/Kconfig +++ b/arch/mn10300/Kconfig @@ -9,6 +9,7 @@ config MN10300 select HAVE_NMI_WATCHDOG if MN10300_WD_TIMER select GENERIC_CLOCKEVENTS select GENERIC_KERNEL_THREAD + select MODULES_USE_ELF_RELA config AM33_2 def_bool n diff --git a/arch/mn10300/include/asm/module.h b/arch/mn10300/include/asm/module.h index 5d7057d..6571103 100644 --- a/arch/mn10300/include/asm/module.h +++ b/arch/mn10300/include/asm/module.h @@ -12,12 +12,7 @@ #ifndef _ASM_MODULE_H #define _ASM_MODULE_H -struct mod_arch_specific { -}; - -#define Elf_Shdr Elf32_Shdr -#define Elf_Sym Elf32_Sym -#define Elf_Ehdr Elf32_Ehdr +#include <asm-generic/module.h> /* * Include the MN10300 architecture version. diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig index 49765b5..05f2ba4 100644 --- a/arch/openrisc/Kconfig +++ b/arch/openrisc/Kconfig @@ -21,6 +21,7 @@ config OPENRISC select GENERIC_CLOCKEVENTS select GENERIC_STRNCPY_FROM_USER select GENERIC_STRNLEN_USER + select MODULES_USE_ELF_RELA config MMU def_bool y diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index b87438b..11def45 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -20,6 +20,8 @@ config PARISC select ARCH_HAVE_NMI_SAFE_CMPXCHG select GENERIC_SMP_IDLE_THREAD select GENERIC_STRNCPY_FROM_USER + select HAVE_MOD_ARCH_SPECIFIC + select MODULES_USE_ELF_RELA help The PA-RISC microprocessor is designed by Hewlett-Packard and used diff --git a/arch/parisc/include/asm/module.h b/arch/parisc/include/asm/module.h index 1f41234..bab37e9 100644 --- a/arch/parisc/include/asm/module.h +++ b/arch/parisc/include/asm/module.h @@ -1,21 +1,11 @@ #ifndef _ASM_PARISC_MODULE_H #define _ASM_PARISC_MODULE_H + +#include <asm-generic/module.h> + /* * This file contains the parisc architecture specific module code. */ -#ifdef CONFIG_64BIT -#define Elf_Shdr Elf64_Shdr -#define Elf_Sym Elf64_Sym -#define Elf_Ehdr Elf64_Ehdr -#define Elf_Addr Elf64_Addr -#define Elf_Rela Elf64_Rela -#else -#define Elf_Shdr Elf32_Shdr -#define Elf_Sym Elf32_Sym -#define Elf_Ehdr Elf32_Ehdr -#define Elf_Addr Elf32_Addr -#define Elf_Rela Elf32_Rela -#endif struct unwind_table; diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 969f3d9..a902a5c 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -142,6 +142,8 @@ config PPC select GENERIC_STRNCPY_FROM_USER select GENERIC_STRNLEN_USER select GENERIC_KERNEL_THREAD + select HAVE_MOD_ARCH_SPECIFIC + select MODULES_USE_ELF_RELA config EARLY_PRINTK bool diff --git a/arch/powerpc/include/asm/module.h b/arch/powerpc/include/asm/module.h index 0192a4e..c1df590 100644 --- a/arch/powerpc/include/asm/module.h +++ b/arch/powerpc/include/asm/module.h @@ -11,6 +11,7 @@ #include <linux/list.h> #include <asm/bug.h> +#include <asm-generic/module.h> #ifndef __powerpc64__ @@ -60,16 +61,10 @@ struct mod_arch_specific { */ #ifdef __powerpc64__ -# define Elf_Shdr Elf64_Shdr -# define Elf_Sym Elf64_Sym -# define Elf_Ehdr Elf64_Ehdr # ifdef MODULE asm(".section .stubs,\"ax\",@nobits; .align 3; .previous"); # endif #else -# define Elf_Shdr Elf32_Shdr -# define Elf_Sym Elf32_Sym -# define Elf_Ehdr Elf32_Ehdr # ifdef MODULE asm(".section .plt,\"ax\",@nobits; .align 3; .previous"); asm(".section .init.plt,\"ax\",@nobits; .align 3; .previous"); diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index e5dac12..3f3d9ca 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -136,6 +136,8 @@ config S390 select KTIME_SCALAR if 32BIT select HAVE_ARCH_SECCOMP_FILTER select GENERIC_KERNEL_THREAD + select HAVE_MOD_ARCH_SPECIFIC + select MODULES_USE_ELF_RELA config SCHED_OMIT_FRAME_POINTER def_bool y diff --git a/arch/s390/include/asm/module.h b/arch/s390/include/asm/module.h index f0b6b26..df1f861 100644 --- a/arch/s390/include/asm/module.h +++ b/arch/s390/include/asm/module.h @@ -1,5 +1,8 @@ #ifndef _ASM_S390_MODULE_H #define _ASM_S390_MODULE_H + +#include <asm-generic/module.h> + /* * This file contains the s390 architecture specific module code. */ @@ -28,19 +31,4 @@ struct mod_arch_specific struct mod_arch_syminfo *syminfo; }; -#ifdef CONFIG_64BIT -#define ElfW(x) Elf64_ ## x -#define ELFW(x) ELF64_ ## x -#else -#define ElfW(x) Elf32_ ## x -#define ELFW(x) ELF32_ ## x -#endif - -#define Elf_Addr ElfW(Addr) -#define Elf_Rela ElfW(Rela) -#define Elf_Shdr ElfW(Shdr) -#define Elf_Sym ElfW(Sym) -#define Elf_Ehdr ElfW(Ehdr) -#define ELF_R_SYM ELFW(R_SYM) -#define ELF_R_TYPE ELFW(R_TYPE) #endif /* _ASM_S390_MODULE_H */ diff --git a/arch/score/Kconfig b/arch/score/Kconfig index 461c237..4f93a43 100644 --- a/arch/score/Kconfig +++ b/arch/score/Kconfig @@ -11,6 +11,8 @@ config SCORE select ARCH_DISCARD_MEMBLOCK select GENERIC_CPU_DEVICES select GENERIC_CLOCKEVENTS + select HAVE_MOD_ARCH_SPECIFIC + select MODULES_USE_ELF_REL choice prompt "System type" diff --git a/arch/score/include/asm/module.h b/arch/score/include/asm/module.h index f0b5dc0..abf395b 100644 --- a/arch/score/include/asm/module.h +++ b/arch/score/include/asm/module.h @@ -3,6 +3,7 @@ #include <linux/list.h> #include <asm/uaccess.h> +#include <asm-generic/module.h> struct mod_arch_specific { /* Data Bus Error exception tables */ @@ -13,11 +14,6 @@ struct mod_arch_specific { typedef uint8_t Elf64_Byte; /* Type for a 8-bit quantity. */ -#define Elf_Shdr Elf32_Shdr -#define Elf_Sym Elf32_Sym -#define Elf_Ehdr Elf32_Ehdr -#define Elf_Addr Elf32_Addr - /* Given an address, look for it in the exception tables. */ #ifdef CONFIG_MODULES const struct exception_table_entry *search_module_dbetables(unsigned long addr); diff --git a/arch/score/kernel/module.c b/arch/score/kernel/module.c index 469e3b6..1378d99b 100644 --- a/arch/score/kernel/module.c +++ b/arch/score/kernel/module.c @@ -125,16 +125,6 @@ int apply_relocate(Elf_Shdr *sechdrs, const char *strtab, return 0; } -int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab, - unsigned int symindex, unsigned int relsec, - struct module *me) -{ - /* Non-standard return value... most other arch's return -ENOEXEC - * for an unsupported relocation variant - */ - return 0; -} - /* Given an address, look for it in the module exception tables. */ const struct exception_table_entry *search_module_dbetables(unsigned long addr) { diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 3b3e27a..babc2b8 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -38,6 +38,8 @@ config SUPERH select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST select GENERIC_STRNCPY_FROM_USER select GENERIC_STRNLEN_USER + select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER + select MODULES_USE_ELF_RELA help The SuperH is a RISC processor targeted for use in embedded systems and consumer electronics; it was also used in the Sega Dreamcast diff --git a/arch/sh/include/asm/module.h b/arch/sh/include/asm/module.h index b7927de..81300d8b 100644 --- a/arch/sh/include/asm/module.h +++ b/arch/sh/include/asm/module.h @@ -1,21 +1,13 @@ #ifndef _ASM_SH_MODULE_H #define _ASM_SH_MODULE_H -struct mod_arch_specific { +#include <asm-generic/module.h> + #ifdef CONFIG_DWARF_UNWINDER +struct mod_arch_specific { struct list_head fde_list; struct list_head cie_list; -#endif }; - -#ifdef CONFIG_64BIT -#define Elf_Shdr Elf64_Shdr -#define Elf_Sym Elf64_Sym -#define Elf_Ehdr Elf64_Ehdr -#else -#define Elf_Shdr Elf32_Shdr -#define Elf_Sym Elf32_Sym -#define Elf_Ehdr Elf32_Ehdr #endif #ifdef CONFIG_CPU_LITTLE_ENDIAN diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 91c780c..b6b442b 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -39,6 +39,7 @@ config SPARC select GENERIC_CLOCKEVENTS select GENERIC_STRNCPY_FROM_USER select GENERIC_STRNLEN_USER + select MODULES_USE_ELF_RELA config SPARC32 def_bool !64BIT diff --git a/arch/sparc/include/asm/Kbuild b/arch/sparc/include/asm/Kbuild index 10d54e5..645a58d 100644 --- a/arch/sparc/include/asm/Kbuild +++ b/arch/sparc/include/asm/Kbuild @@ -7,4 +7,5 @@ generic-y += exec.h generic-y += local64.h generic-y += irq_regs.h generic-y += local.h +generic-y += module.h generic-y += word-at-a-time.h diff --git a/arch/sparc/include/asm/module.h b/arch/sparc/include/asm/module.h deleted file mode 100644 index ff8e02d..0000000 --- a/arch/sparc/include/asm/module.h +++ /dev/null @@ -1,24 +0,0 @@ -#ifndef __SPARC_MODULE_H -#define __SPARC_MODULE_H -struct mod_arch_specific { }; - -/* - * Use some preprocessor magic to define the correct symbol - * for sparc32 and sparc64. - * Elf_Addr becomes Elf32_Addr for sparc32 and Elf64_Addr for sparc64 - */ -#define ___ELF(a, b, c) a##b##c -#define __ELF(a, b, c) ___ELF(a, b, c) -#define _Elf(t) __ELF(Elf, CONFIG_BITS, t) -#define _ELF(t) __ELF(ELF, CONFIG_BITS, t) - -#define Elf_Shdr _Elf(_Shdr) -#define Elf_Sym _Elf(_Sym) -#define Elf_Ehdr _Elf(_Ehdr) -#define Elf_Rela _Elf(_Rela) -#define Elf_Addr _Elf(_Addr) - -#define ELF_R_SYM _ELF(_R_SYM) -#define ELF_R_TYPE _ELF(_R_TYPE) - -#endif /* __SPARC_MODULE_H */ diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig index dc46490..875d008 100644 --- a/arch/tile/Kconfig +++ b/arch/tile/Kconfig @@ -20,6 +20,7 @@ config TILE select SYS_HYPERVISOR select ARCH_HAVE_NMI_SAFE_CMPXCHG select GENERIC_CLOCKEVENTS + select MODULES_USE_ELF_RELA # FIXME: investigate whether we need/want these options. # select HAVE_IOREMAP_PROT diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig index 35ee2bf..e5c5473 100644 --- a/arch/unicore32/Kconfig +++ b/arch/unicore32/Kconfig @@ -15,6 +15,7 @@ config UNICORE32 select GENERIC_IRQ_SHOW select ARCH_WANT_FRAME_POINTERS select GENERIC_IOMAP + select MODULES_USE_ELF_REL help UniCore-32 is 32-bit Instruction Set Architecture, including a series of low-power-consumption RISC chip diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 70071b1..46c3bff 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -110,6 +110,8 @@ config X86 select HAVE_IRQ_TIME_ACCOUNTING select GENERIC_KERNEL_THREAD select GENERIC_KERNEL_EXECVE + select MODULES_USE_ELF_REL if X86_32 + select MODULES_USE_ELF_RELA if X86_64 config INSTRUCTION_DECODER def_bool y diff --git a/arch/x86/um/Kconfig b/arch/x86/um/Kconfig index 9fa950d..0761175 100644 --- a/arch/x86/um/Kconfig +++ b/arch/x86/um/Kconfig @@ -24,9 +24,11 @@ config X86_32 def_bool !64BIT select HAVE_AOUT select ARCH_WANT_IPC_PARSE_VERSION + select MODULES_USE_ELF_REL config X86_64 def_bool 64BIT + select MODULES_USE_ELF_RELA config RWSEM_XCHGADD_ALGORITHM def_bool X86_XADD && 64BIT diff --git a/arch/xtensa/include/asm/module.h b/arch/xtensa/include/asm/module.h index d9b34be..488b40c 100644 --- a/arch/xtensa/include/asm/module.h +++ b/arch/xtensa/include/asm/module.h @@ -13,15 +13,8 @@ #ifndef _XTENSA_MODULE_H #define _XTENSA_MODULE_H -struct mod_arch_specific -{ - /* No special elements, yet. */ -}; - #define MODULE_ARCH_VERMAGIC "xtensa-" __stringify(XCHAL_CORE_ID) " " -#define Elf_Shdr Elf32_Shdr -#define Elf_Sym Elf32_Sym -#define Elf_Ehdr Elf32_Ehdr +#include <asm-generic/module.h> #endif /* _XTENSA_MODULE_H */ |
